Hi
I'm an electronic engineer working in the fields of digital signal processing and high speed digital design. Every engineer tends to keep a notebook where they collect useful bits of information. This is my notebook. I hope you will find it useful too.
This site now has a proper URL. http://eenotebook.co.uk/
Mike Wells
Frequency band definitions e.g. where is SHF, X band, J band. What frequencies are GPS 

Laplace, Fourier and z transforms, trig, calculus etc. 

e.g. Boltzmann's constant, imperial conversions, resistivities, heat capacities and conductivities 

How the performance of floating point DSP processors has advanced over the years. Gives technology, peak MFLOPS and FFT benchmarks 

How the GPS satellite navigation system works 

Impedance formulas for different transmission lines, logic family characteristics (slew rates, metastability characteristics), resistor colour codes etc. 

Ionosphere, D E and F Layers, Sporadic E, Modes of propagation, Solar flares, Ionospheric storms, Polarisation (ordinary and extraordinary modes) etc. plus some examples 

System design and DSP odds and ends: noise level calculations, A/D noise, Propagation in free space, Radar equation 

ASCII table, Common UNIX and VI commands, printf format, etc. 
It's still early days for this site. If you have any suggestions about what I can add as I improve it you can email me at:
Last updated August 10, 2014
© 2014 Michael Wells